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annotate Implab/Formats/ScannerContext.cs @ 209:a867536c68fc v2

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Bound promise to CancellationToken Added new states to ExecutionSate enum. Added Safe.Guard() method to handle cleanup of the result of the promise
author cin
date Wed, 16 Nov 2016 03:06:08 +0300
parents a0ff6a0e9c44
children
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1 namespace Implab.Formats {
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2 /// <summary>
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3 /// Represents a scanner configuration usefull to recongnize token, based on the DFA.
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4 /// </summary>
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5 public class ScannerContext<TTag> {
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7 public int[,] Dfa { get; private set; }
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9 public bool[] Final { get; private set; }
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11 public TTag[][] Tags { get; private set; }
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13 public int State { get; private set; }
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15 public int[] Alphabet { get; private set; }
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17 public ScannerContext(int[,] dfa, bool[] final, TTag[][] tags, int state, int[] alphabet) {
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18 Dfa = dfa;
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19 Final = final;
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20 Tags = tags;
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21 State = state;
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22 Alphabet = alphabet;
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23 }
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25 public bool Execute(TextScanner scanner, out TTag[] tag) {
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26 return scanner.ReadToken(Dfa, Final, Tags, State, Alphabet, out tag);
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27 }
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28 }
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29 }
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